煤矿安全2019，Vol.50Issue(6)：254-257,262,5.DOI:10.13347/j.cnki.mkaq.2019.06.061
基于"弹性孔理论"的巷道围岩结构失稳研究
Study on Structural Instability of Roadway Surrounding Rock Based on"Elastic Hole Theory"
YANG Haobo 1LI Shimu 1FANG Baili 1ZHU Wei 1LYU Zhaohai 2WANG Ruibin 1TU Zhiling3
作者信息
- 1. Xiaozhuang Mining Company, Binchang Mining Group Co., Ltd., Binzhou 713500, China
- 2. State Energy Group Ningxia Coal Industry Co., Ltd., Ningxia 750011, China
- 3. Wenjiapo Mining Company, Binchang Mining Group Co., Ltd., Binzhou 713500, China
- 折叠
摘要
Abstract
The instability and unloading of roadway surrounding rock under excavation disturbance can easily induce large-scale caving of rock mass in heading face, even lead to dynamic disaster of surrounding rock, which seriously restricts safe and efficient excavation. Aiming at the instability problem of surrounding rock structure of roadway, four types of slope induced by excavation disturbance are summarized based on the elastic hole theory, and the instability mechanism of roof structure and surrounding rock of roadway is analyzed. The volume decreases greatly, and the overall failure degree of overlying strata is slowed down. The results show that the roof is more prone to structural instability under the influence of roadway disturbance. The roadway support can effectively hinder the movement of overburden roof and floor, alleviate the probability of rock mass catastrophe, effectively control the dynamic disaster, and realize the safe roadway driving.关键词
弹性孔理论/巷道围岩/顶板失稳/巷道片帮/安全掘进Key words
elastic hole theory/roadway surrounding rock/roof instability/roadway wall caving/safe tunneling分类
矿业与冶金引用本文复制引用
YANG Haobo,LI Shimu,FANG Baili,ZHU Wei,LYU Zhaohai,WANG Ruibin,TU Zhiling..基于"弹性孔理论"的巷道围岩结构失稳研究[J].煤矿安全,2019,50(6):254-257,262,5.
